MANHATTAN - A transportation group is calling for drivers who hit bicyclists to be held accountable by the city.

Erica Lefevre, a mother whose 30-year-old son, Mathieu, was struck and killed by a truck last week, was at a loss for words after no charges were filed in the accident. The truck driver told authorities he didn't know anyone had been hit.

The victim's family flew in from Canada as soon as it heard of his death, but says after nearly a week, it still has no answers from the NYPD.

Transportation Alternatives says after so many bicycling accidents and no one being held responsible for the deaths, it felt compelled to call attention to them.